Friends I am starting on a (section of the) project where I need to build a matrix with on the order of 5 million rows and 200 columns
I am wondering if I can stay in R. I need to do rollapply type operations on the columns, including some that will be functions of (windows of) two columns. I have been looking at the ff and bigmemory packages but am not sure that they will do. Before I get too deep can some one offer some wisdom about what the best direction to go would be? Switching to C/C++ is definitely an option if it is all too hard cheers Worik [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.